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| SECTION H– ELECTRICITY |
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| H 04 | ELECTRIC COMMUNICATION TECHNIQUE |
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| H 04 H | BROADCAST COMMUNICATION (transmission in general H 04 B; multiplex communication H 04 J) |
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| Note |
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| This subclass covers: |
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| – | distribution of entertainment or informative matter simultaneously to a number of receiving stations over transmission lines or over radio waves; |
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| – | recording of the use made of the broadcast service. |
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1/ | 00 | Broadcast distribution systems |
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1/ | 02 | . | Wired systems |
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1/ | 04 | . | . | using carrier waves |
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1/ | 06 | . | . | . | having frequencies in two or more frequency bands, e.g. medium wave and VHF |
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1/ | 08 | . | . | . | combined with telephone network over which the broadcast is continuously available (telephone systems in general H 04 M) |
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1/ | 10 | . | . | using signals not modulated on a carrier |
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1/ | 12 | . | . | . | not sharing the network with any other service |
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1/ | 14 | . | . | combined with power distribution network |
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3/ | 00 | Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency |
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5/ | 00 | Stereophonic broadcast systems (multiplex systems in general H 04 J) |
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7/ | 00 | Studio equipment (for television H 04 N) |
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7/ | 02 | . | Mobile studios |
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7/ | 04 | . | Monitoring programmes |
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9/ | 00 | Recording the use made of the broadcast service |
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